If you didnít see it live, there are two versions of the launch: 30 min and 10 min. Both are great, but the 30 min version has more for the gearhead including all of the 10 min version.

One thing that puzzled me on first viewing was the landing of one of the side boosters at the Cape for potential re-use. There appears to be a ghost image in the video of another booster. My friend at Smithsonian Air and Space explained, and it is clearly explained in the longer video. It is the other side booster landing simultaneously; but itís not what you think. They are not on a coordinated return, they are independently controlled which makes for simpler control. Any slight perturbation would cause one to get ahead of the other: slightly different jettison time, different free-fall paths, different maneuvers to get on course for return, minor variations in air friction, totally different corrections coming in to land, ANYTHING. Most viewers wonít appreciate that, but that landing was a thing of beauty.

--Previous Message-- : My lips are sealed...Joe P (I want you at : camp this year) : : --Previous Message-- : Ha! Just ask my wife about my collectibles. : Better yet, DON'T! : : --Previous Message-- : Rick: I didn't know you lived at the : Smithsonian--I thought you were still in : CT..Joe P : : --Previous Message-- : And Elon Musk for the successful launch of : the : Falcon Heavy space system today. I watched : it live and it was spectacular. I've been a : fan of the U.S. Space Program since I was a : kid. And I'm an avid collector. Here's part : of my collection. : : : : : : : : :